# git rev-parse -q --verify 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931^{commit} 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 already have revision, skipping fetch # git checkout -q -f -B kisskb 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 # git clean -qxdf # < git log -1 # commit 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 # Author: Nathan Lynch # Date: Mon Mar 15 03:00:45 2021 -0500 # # powerpc/pseries/mobility: handle premature return from H_JOIN # # The pseries join/suspend sequence in its current form was written with # the assumption that it was the only user of H_PROD and that it needn't # handle spurious successful returns from H_JOIN. That's wrong; # powerpc's paravirt spinlock code uses H_PROD, and CPUs entering # do_join() can be woken prematurely from H_JOIN with a status of # H_SUCCESS as a result. This causes all CPUs to exit the sequence # early, preventing suspend from occurring at all. # # Add a 'done' boolean flag to the pseries_suspend_info struct, and have # the waking thread set it before waking the other threads. Threads # which receive H_SUCCESS from H_JOIN retry if the 'done' flag is still # unset. # # Fixes: 9327dc0aeef3 ("powerpc/pseries/mobility: use stop_machine for join/suspend") # Signed-off-by: Nathan Lynch # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210315080045.460331-3-nathanl@linux.ibm.com # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_mpc85xx_cds_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- 85xx/mpc85xx_cds_defconfig # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_mpc85xx_cds_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_mpc85xx_cds_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_mpc85xx_cds_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0x5bfb64) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5bfb64) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5bfb64) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5af544) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.12.0-rc2-g274cb1ca2e7c Created: Wed Mar 24 00:26:59 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2964962 Bytes = 2895.47 KiB = 2.83 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.12.0-rc2-g274cb1ca2e7c Created: Wed Mar 24 00:26:59 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2995176 Bytes = 2924.98 KiB = 2.86 MiB Load Address: 00600000 Entry Point: 006002a4 Image Name: Linux-5.12.0-rc2-g274cb1ca2e7c Created: Wed Mar 24 00:26:59 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2995177 Bytes = 2924.98 KiB = 2.86 MiB Load Address: 00600000 Entry Point: 006002a4 Image Name: Linux-5.12.0-rc2-g274cb1ca2e7c Created: Wed Mar 24 00:26:59 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2996337 Bytes = 2926.11 KiB = 2.86 MiB Load Address: 00600000 Entry Point: 006002a4 Completed OK # rm -rf /kisskb/build/powerpc-fixes_85xx_mpc85xx_cds_defconfig_powerpc-gcc4.9 # Build took: 0:00:58.868636